package com.it.utils;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.type.TypeFactory;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;

public class FastJsonRedisSerializer<T> implements RedisSerializer<T> {
    public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
    private Class<T> clazz;

    static {
        ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
    }

    public FastJsonRedisSerializer(Class<T> clazz)
    {
        super();
        this.clazz =clazz;
    }

@Override
public byte[]serialize(T t)throws SerializationException
{
        if(t==null)
        {
        return new byte[0];
        }
        return JSON.toJSONString(t,SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
        }
@Override
public T deserialize(byte[]bytes)throws SerializationException{
        if(bytes==null||bytes.length<=0){
        return null;}
        String str=new String(bytes,DEFAULT_CHARSET);
        return JSON.parseObject(str,clazz);
        }
protected JavaType getJavaType(Class<?> clazz)
{
        return TypeFactory.defaultInstance().constructType(clazz);
    }
}